The 1.5KE47A R0G: That 1500 W figure is the power the device can absorb in a single transient event — it does not mean continuous dissipation. The clamping voltage at that peak pulse current is 64.8 V, which is the voltage the diode holds the protected rail to during the surge. Reverse standoff voltage is 40.2 V — this is the DC or peak-AC voltage the diode can sit across without conducting appreciable leakage. The breakdown voltage range starts at 44.7 V minimum, so the diode begins to avalanche between 44.7 V and the clamping point. For a 36 V or 40 V rail, this part holds the line without interfering with normal operation.
DO-201 axial — board-fit and temperature range
Supplied in a DO-201AA / DO-27 axial leaded package, through-hole mount. The DO-201 body handles the 1500 W pulse without cracking the epoxy — the lead frame and die bond are sized for the thermal shock of a surge. The part is unidirectional (single-channel cathode-band marked). No power line protection built in — this is a signal or low-voltage DC rail protector, not a mains-side MOV replacement. The Tape & Reel packaging suits automated insertion for volume builds.
Active production — sourcing posture
Lifecycle status is Active per Taiwan Semiconductor.